Note that there is a shift in central wavelength when placed in different f/ratio beams. At the KPNO 4meter f/3.1 beam this corresponds to a shift of approximately 12 Angstroms bluer; at the CTIO 4meter f/2.9 this corresponds to a shift of approximately 15 Angstroms bluer; at the WIYN 0.9m f/7.9 this corresponds to a shift of approximately 5 Angstroms bluer.
See the
plot at the bottom of the page.

Note:In December 2003 a replacement for this filter (k1046) was purchased. See below for a comparison
between the two filters.

Click here to get the ASCII version of the above plot.
Click here to get the Postscript version of the above plot.

Click here to get the ASCII version of the above plot.Click here to get the Postscript version of the above plot.

A comparison of this filter with the newer version of this filter (k1046):

Below is a plot of the transmission of this filter when used at telescopes with differing focal ratios and
central obscurations; the KPNO 4m (f/3.1) and the CTIO 4m (f/2.9). At the KPNO
4m f/3.1 the properties of this filter are:
CWL=8087A, FWHM=71A, PEAK TRANSMISSION=93%.

Click here for the ASCII version of the simulation data used in the above plot.Click here for a postscript version of the above plot.